Tool-holder.



Patented July 22, 1913.

INVENTOR Henry C urH n WITNESSES ATTORNEY8 being shown in section; Fig.is an elevaing from one end of the stock to the other HENRY CURTIN, orGLO PATENT ()FFICE.

VERSVILLE, NEW YORK.

TOOL-HOLDER.

Specification of Application filed January 6, 1913.

er P n Patented July 22, t 913.

Serial No. 740.399.

To all 7011077111 may concern Be it known that I, IlENRY Climax, acitizen of the United States, and a resident of Gloversville, in thecounty of Fulton and Stateof New York, have invented a new and ImprovedT col-Holder, of which the following is a full, clear, and exactdescription.

The invention relates to lathes. and its object is to provide a new andimproved tool holder arranged to readily accommodate different forms andsizes of turning, torm ing or boring tools, and to permit of securelyfastening the desired tool in place.

For the purpose mentioned, use is made of a stock having seats alongeach edge for the reception of a round shankboring tool at one seat. anda square shank turning tool at the other seat, a clamping bar adapted tooverlie the tool used at the time, and a clamping yoke pivoted on theforward end of the stock and adapted to be swung around to extend overthe clamping bar in either position thereof and to securely clamp theclamping bar in position on the tool.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure 1 is a side elevation of the tool holder with a boring tool inposition, parts tion of the front end of the tool holder; Fig. 3 is aside elevation of the tool holder with a turning tool in positiontherein; Fig. 4 is an elevation of the front end of the same: and Fig. 5is a perspective view of the filling bar.

A stock A in the form of a rectangular bar is provided on one edge witha V-shaped groove A and at the other edge with a channel A the grooveand channel extendend thereof. The round shank B of a boring tool isadapted to be seated in the V- shaped groove A and the top of the saidround shank is adapted to be seated in a V-shaped groove C formed in theunder side ofa clamping bar C overlying the, shank B, as plainlyindicated in Figs. 1 and 2. The clamping bar C is engaged on top by ascrew D screwing in a yoke D held on a transverse pivot E arranged inthe for-- ward end of the stock A intermediate the the channel A ltvproviding the V-shaped grooves A and-(" in the stock A and in theclamping liar t. round shanks ii of ditt'erent diameters can be readilyaccmnmodated. and on screwin'gdown the screw l) the clamping bar Cfirmly clamps the shank B in position on the stock A.

The channel A is filled with a titling har F while using a round shankboring tool so that the tool holder can be readily set into and clampedin the tool post of a lathe or a similar machine. \t'hen it is desiredto use the tool holder for holding a turning or forming tool having arectangular shank l3. as shown in Figs. 3 and i. then the filling bar Fis removed from the channel A and the said shank li of the turning toolis placed into the channel \\'hen the turning or forming tool is used,the yoke l) is swung around from the position it previ ously had. asshown in Figs. l and '3. so that the screw l) engages the clamping baroverlving the shank l). fitting into the channel A as shown in Figs. Itand i. It will he noticed that the height of the shank B is somewhat inexcess ot the depth of the channel A so that the clamping bar readilyoverlies the shank l3. and on screiw ing up the screw D the clamping baris firmly pressed into contact with the top of the shank B to securelyhold the turning or forming tool in position in the tool holder. It isunderstood that in either case the tool holder placed into a tool postof the usua' construction and fastened therein, as indicated in dottedlines in Fig. 1.

It will be noticed that in the construction disclosed in Figs. 1 and 2.the titling liar F con'ipletely fills the channel A so as to providepractically a solid stock to prevent injury tothe side members of thechannel when clamping the tool holdc. in position in the tool post.

In order to hold the filling bar F removably in position in the channelA, the forward end of the filling bar is provided on opposite sides withlugs F engaging slots A in the side walls of the channel, and the rearend of the filling bar F is provided with a lengthwise extending slit Fto form spring members clainpingtv engaging the inner surfaces of theside walls of the channel A to properly hold the tilling bar F inposition in the channel A" and to allow removal of the said filling barwhenever it is bottom of the groove A and the. bottom desired to use thechannel A for the reee;

tion of the shank B of a turning or forming tool.

The tool holder shown and described is very simple and durable inconstruction and is arranged to accommodate different sizes of roundshank boring tools and difl'e-rent tUt'tllS of turning or forming tools,as above described.

Having thus described my invention, 1 claim ashew and desire to secureby Let-- tors lntent:

l. A tool holder, comprising a. stock, provided along one edge with aV-shaped groove and at its other edge with a channel, a clamping barhaving a V-shaped groove in its under site and operating in conjunctionwith the grooved edge of the stock to (lamp a round shank boring toolbetween the stock and clamping bar, a clamping yoke pivoted on the saidstock and adapted to be swung around to extend over the said groovededge or the said channel edge, and clamping means carried by theclamping yoke. for engaging the said clamping bar.

J. A tool holder, comprising a stock hav in a sent along each edge forthe reception of a round shank boring tool at one seat and :1 squareshank turning tool at the other seat, a clan'iping bar adapted tooverlie the tool used at a time and having a sent along its under side,and a clamping yoke pivoted on the forward end oi the stock and adaptedto be swung around to extend over the clamping bar in either positionthereof. the said clamping yoke having a clamping ext-re w screwing inthe top of the yoke and abutting against the said clamping bar.

:5. It tool holder, comprising a stock, provided along one edge with aV-shaped groove and at its other edge witha channel, a clamping baroperating in conjunction with the grooved edge of the stock to clamp around shank boring tool between the stock and clamping bar, a clampingyoke pivoted on the said stock and adapted to he swung around to extendover the aid vided along one edge with a V-shaped groove and at itsother edge with a channel, a clamping bar operating in conjunction withthe grooved edge of the stock to clamp a round shank boring tool betweenthe stock and clamping bar, a clamping yoke pivoted on the said stockand adapted to be swung around to extend over the said grooved edgeorthe said channel edge, and a filling bar for removable engagement withthe said channel, one end of the filling bar being split to form springmembers adapted to clampingly engage the side Walls oi the said channel,and the other end of the filling bar being provided with lugs,- and thesaid stock being provided in the side alls of the said channel withslots for receiving the said lu s.

In a tool holder, a stock provided with a seat alon' one edge for thereception of a round shan boring tool, and a Seatin the form of achannel along the other edge for the reception of a square shank turningtool, means for clamping either of said tools in position in its seat,and a filling bar for filling said channel While using a round shankboring tool, the said filling bar preventing injury to the side membersof thechannel when clamping the tool holder in position in a tool post,and means for holding the filling bar removably in position in the saidchannel.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HENRY, CURTIN.

' fitness-es:

HANNA E. WARD, It. DOUGLAS Born.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patent Washington, D. C.

